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Date:      Mon, 09 Nov 2015 15:16:25 +0000
From:      bugzilla-noreply@freebsd.org
To:        freebsd-ports-bugs@FreeBSD.org
Subject:   [Bug 204400] dns/dnstable fails to build with GCC 4.9: /usr/local/lib/libxs.so.2: undefined reference to `std::__throw_out_of_range_fmt(char const*, ...)@GLIBCXX_3.4.20'
Message-ID:  <bug-204400-13@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=204400

            Bug ID: 204400
           Summary: dns/dnstable fails to build with GCC 4.9:
                    /usr/local/lib/libxs.so.2: undefined reference to
                    `std::__throw_out_of_range_fmt(char const*,
                    ...)@GLIBCXX_3.4.20'
           Product: Ports & Packages
           Version: Latest
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Some People
          Priority: ---
         Component: Individual Port(s)
          Assignee: truckman@FreeBSD.org
          Reporter: gerald@FreeBSD.org
            Blocks: 196712
          Assignee: truckman@FreeBSD.org
             Flags: maintainer-feedback?(truckman@FreeBSD.org)

We are working to move the default version of GCC in ports (lang/gcc)
from GCC 4.8 to GCC 4.9.

This port is one of a few that blocks this update, cf. 

http://package18.nyi.freebsd.org/data/93amd64-default-PR196712/2015-10-26_13h36m37s/logs/errors/dnstable-0.8.0.log

My guess is that dnstable uses a library that uses GCC, but fails to
use (and link with) GCC itself, hence this undefined reference.  In a
nutshell, if your port uses C++ and links with some C++ code built
with GCC, then the port itself needs to use GCC.

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